Re: Swings and roundabouts
"I know "munich" got mentioned earlier in the comments, didn't they end up almost 2 years late and tens of millions over budget? End result was a system that did not work correctly and will shortly be scrapped."
"May" be scrapped. And there's a big pool of knowledge there on what worked and what didn't. Likewise, the experience of the French Gendarmerie, and other large government projects in Spain, The Philippines, Brazil etc..